test: basic tests for hooks

packages/runtime-core/__tests__/hooks.spec.ts

@@ -0,0 +1,60 @@
+import { withHooks, useState, h, nextTick, useEffect } from '../src'
+import { renderIntsance, serialize, triggerEvent } from '@vue/runtime-test'
+
+describe('hooks', () => {
+  it('useState', async () => {
+    const Counter = withHooks(() => {
+      const [count, setCount] = useState(0)
+      return h(
+        'div',
+        {
+          onClick: () => {
+            setCount(count + 1)
+          }
+        },
+        count
+      )
+    })
+
+    const counter = renderIntsance(Counter)
+    expect(serialize(counter.$el)).toBe(`<div>0</div>`)
+
+    triggerEvent(counter.$el, 'click')
+    await nextTick()
+    expect(serialize(counter.$el)).toBe(`<div>1</div>`)
+  })
+
+  it('useEffect', async () => {
+    let effect = -1
+
+    const Counter = withHooks(() => {
+      const [count, setCount] = useState(0)
+      useEffect(() => {
+        effect = count
+      })
+      return h(
+        'div',
+        {
+          onClick: () => {
+            setCount(count + 1)
+          }
+        },
+        count
+      )
+    })
+
+    const counter = renderIntsance(Counter)
+    expect(effect).toBe(0)
+    triggerEvent(counter.$el, 'click')
+    await nextTick()
+    expect(effect).toBe(1)
+  })
+
+  it('useEffect with empty keys', async () => {
+    // TODO
+  })
+
+  it('useEffect with keys', async () => {
+    // TODO
+  })
+})